Evap. canister - cap or vent?
Junior User
Joined: Aug 2001
Posts: 99
Likes: 0
From: Clearwater, FL
Evap. canister - cap or vent?
Hi guys. No luck on my balancer question so I'll try this one. I am installing a 69 460 in my 79 Bronco. My county here in FL did away with emission testing so I do not have to go through emissions anymore. I would like to remove the (ugly) evap. canister from my engine compartment and the line that runs along the pass. side of the frame. My question is should I cap or vent the line at the tank. Tank info: My filler neck has two lines running from the tank to the neck (why, I don't know). The cap says "remove slowly to avoid spray" or something like that. Seems to me that the tank should have a vent somewhere (previously the evap. canister vent) but I do not know, that's why I am asking you knowledgeable folks out there! Maybe I should leave the canister on for venting purposes and cap all the lines that ran from the canister to the carb, air cleaner, etc... If so, could I relocate it to, say, the inside of the frame where it would be less conspicuous? Any repercussions when the canister is submerged in water? What were the tank venting dynamics on pre-emissions vehicles? I would think I would need to emulate the tank venting system used on a 69 Lincoln. Any suggestions??? TIA. JD
Senior User
Joined: Mar 2000
Posts: 360
Likes: 0
Evap. canister - cap or vent?
Pre-evaporative emissions vehicles had just the fuel line from the tank. The gas cap was a vented cap, vented both ways, in and out. Inwards for air to replace the gas used up, outwards for expansion on hot days.
Moderator
Joined: Jan 2001
Posts: 57,027
Likes: 2,763
From: Virginia
Evap. canister - cap or vent?
[updated:LAST EDITED ON 21-Feb-02 AT 01:19 AM (EST)]The ones with the canisters have a totally sealed tank. So if you plug that line your are going to run into problems. You are going to have to figure out how to keep the vent line somehow, and keep dirt and water from getting in. Also, wherever you put it, you might get a gas smell.
I guess you could plug the line and drill a hole in your gas cap.
I guess you could plug the line and drill a hole in your gas cap.
Posting Guru
Joined: Jun 1999
Posts: 1,100
Likes: 0
From: Durham
Evap. canister - cap or vent?
I removed my cannister and left my vent open, I have it positioned up and pointed so that it would be hard to get any water in it...been that way for over 3 years and no problems, yet.
Junior User
Joined: Aug 2001
Posts: 99
Likes: 0
From: Clearwater, FL
Evap. canister - cap or vent?
Thanks for the responses guys. Maybe I could cap the vent line at the tank and purchase a vented cap if I can find one that will fit the filler neck. I'll check it out at NAPA tomorrow. If not, I'll probably just keep the canister and plug all the lines that previously went to the engine components. Thanks again.
Thread
Thread Starter
Forum
Replies
Last Post
